Google SketchUp is great free software that can be used across the curriculum. This page from RoboHelp contains links to numerous project ideas using the software. For each project shown below, you can view project details in HTML or PDF format.
Thinkcad is a free open source web-based tools that allows users to learn to design the products of their life. Students will be able to easily design in 3D what they have always dreamed of, but never thought possible. Until now. This is a fantastic tool to introduce real-world fabrication skills that teach student that that they can learn by doing. Tinkercad also has a growing community that helps users learn how to create their first real things in just a few minutes. A great tool!
Creating an iBooks 2 book with 3D models, Dashcode widgets and interactive Keynote files. Create a Seller account, buy an ISBN, use iTunes Producer to manage your content and track sales using Connect. Download the sample "Kids Love Bugs" here: http://itunes.apple.com/us/book/dr.-kemps-kids-love-bugs/id497852225